diff --git a/programs/hash/generic_sum.c b/programs/hash/generic_sum.c
index 7805a79bc..d1e81d491 100644
--- a/programs/hash/generic_sum.c
+++ b/programs/hash/generic_sum.c
@@ -83,8 +83,13 @@ static int generic_check( const mbedtls_md_info_t *md_info, char *filename )
     int nb_err1, nb_err2;
     int nb_tot1, nb_tot2;
     unsigned char sum[MBEDTLS_MD_MAX_SIZE];
-    char buf[MBEDTLS_MD_MAX_SIZE * 2 + 1] = { }, line[1024];
+    char line[1024];
     char diff;
+#if defined(__clang_analyzer__)
+    char buf[MBEDTLS_MD_MAX_SIZE * 2 + 1] = { };
+#else
+    char buf[MBEDTLS_MD_MAX_SIZE * 2 + 1];
+#endif
 
     if( ( f = fopen( filename, "rb" ) ) == NULL )
     {